The Kondor D.6 was a prototype Germanbiplanefighter aircraft flown in 1918. In the interests of better upward vision for the pilot, its upper wing was in two halves, separated over the central fuselage. Its development was soon abandoned.

In most respects the D.6 was a conventional biplane fighter; its one distinguishing feature came from an attempt to improve the pilot's upward view, normally limited by the upper wing. The usual approach was to position the cockpit under the wing trailing edge and form a cut-out in its edge but the D.6 took this to the extreme of removing all the centre section. Though it served its immediate purpose, this feature required extra cabane strengthening and much increased the induced drag associated with vortices at wing tips, now six rather than four in number.[1]